In a move sure to frustrate ufologists and conspiracy theorists, NASA says that UFOs are almost certainly not aliens.

An astronomer who keeps making wild claims about alien technology in our solar system now claims there are parts of an alien spaceship in the Pacific Ocean.

Former military pilots and officers often share UFO stories with the media. But what if some of those objects really are from alien words? How would we know? What would we do?

The Chilean military has no idea what it tracked after two years of investigations and the footage it shared really is a head-scratcher.

It's one thing when people can't explain the weird things they see in the night sky. But what if a UFO sighting takes place over a military base and high ranking officers have no idea what happened?

Unsurprisingly, the people of Denver don't want to spend their money on researching UFO sightings instead of basic public services.

Ufologists seem convinced that NASA is trying to distort an image showing a gigantic alien spaceship shaped like an X floating through the solar system.

Ufologists want the EU to create an office of extraterrestrial affairs and diplomacy.

One example of hard proof is worth a million vague anecdotes and personal accounts of sightings.

Ancient astronaut enthusiasts are sure that humans were created by alien experiments. And this time, they say they have tangible proof.

Ufologists love to talk about the rumored alien battle over Nuremberg, Germany in 1561. But there's no evidence it actually happened or that the cited sources ever existed.

Talking in depth about ancient astronauts and UFOs.

When explaining a UFO sighting, it's probably a good idea to make sure that your explanation makes sense...

People have been seeing weird, saucer-shaped objects in the sky half a century before the UFO craze took off in America.

If they're not going to exterminate us, aliens might find themselves in charge of saving our species.